Eric Jacqmain covered an ordinary fiberglass satellite dish with 5,800 mirror tiles to create a home-made death ray that can "melt steel, vaporize aluminum, boil concrete and turn dirt into lava" with the intensity of 5,000 suns.

@Ratz,Q: "I'd be curious to know how he managed to align all of those tiles."

The parabolic dish takes care of that. Parallel light rays hitting a parabolic surface will deflect to a common spot known as the "focal point". Which is where they put the satellite antenna on the dish.

I've seen this done with aluminum foil. I would imagine the mirror tiles are more reflective making it more efficient.